鼓励别人用，自己不会用。

David Heinemeier Hansson, Creator of Ruby on Rails, Founder & CTO at Basecamp

Answered Jan 25

Love that Ruby’s lessons have served as inspiration in elixir. And I love the idea of picking up something old, like Erlang, and saying, hey, this is actually pretty great!

But I don’t personally have a use case where the Elixir/Erlang/Phoenix combo offers something that’s compelling enough to warrant the downgrade from using Ruby. I wouldn’t want to write, say, Basecamp in such a pairing, and, hey, Basecamp is what I write.

I’d encourage others to check it out, though. It seems like a great solution in particular if you need to deal with millions of users connected with persistent connections and each user isn’t very valuable. I can totally see why WhatsApp picked Erlang, and that’s a great use case for something that wouldn’t be a good fit for Ruby.

So. Big fan. But just not something I personally need.